Tension device



Sept. 6, 1931?. J. B. DAUDELIN TENSION DEVICE Filed March 25, 1930 Patented Sept. 6, 1932 JEAN n. nAUDEL1N,-or FALL RIVER, MASSACHUSETTS 'rnNsroN DEVICE i Application filed March 25, 1930. `serial No. 438,678.

This invention relates to winders and particularly to a Winder equipped with means for tensioning the thread as it is drawn from the bobbin onto the spool. Various thread tensioning arrangements for vthis purpose have been heretofore proposed. Inl one form the thread passes between a series of balls which are supposed to exert the proper tension on the thread, but this does not make an especially dependable devicein that the degree of tension cannot be accurately regulated. Various feeler arrangements for intermittently contacting the thread have also been tried. V

My present invention provides for exert ing a positive and uniform tension on the thread at all times and under all Conditions of operation, together with means for adi justing the tension to any desired degree.

Structurally, my tension device is simple and inexpensive and is capable of installation upon existing Winder frames without modification or change of frame construction. In operation, my tension device prevents any knots, bunches, or waste on the thread from being wound onto the spool and subsequently woven into the cloth. By keeping the warp clear of these undesirable knots or the like, the quality of the cloth woven from the warp vis improved in that the cloth will not have any rough places in it due to the presence of knots or the like.

In the accompanyingl drawing I show a Winder frame of standard type equipped with a thread tensioning device in accordance with my invention, such device representing one preferred embodiment of my invention but obviously being capable of such variation as may be necessary to adapt it to thev particular Winder frame with which it is to be used.

In such drawing Fig. l is an end view of a Winder frame equipped With my invention. Y y

Fig. 2 is an edge View of the upper end of the frame shown in Fig. 1 and particularly illustrating the tension device.

Fig. 3 is asection on the line 3-3 of Fig. l, and

Fig. 4 isa section yon the line 4 4 of Fig. r l. i y

JIhave indicated atl a Winder frame of standard type and at 2 bobbin or other thread carrier mounted on said frame in usual position. i

Above the-bobbin the frame is offset as indicated at`3 and on this oifset portion and in line with the bobbin I mount my thread tensioning device. This comprises a helix et presenting a plurality of spaced substantially concentric turns or windings. The helixis fastened as at 5 to onevface of the offset portion. 3 of the frame in such relation that the th-read or other filling F of the bobbin enters between the outermost turnsv thereofy and gradually Works its way to the centerk thereof..

Fixed in the. helix centrally thereof is a slotted guide or bearing 6 from which extends upwardly in the axis'of the helix a tension bar or rod'7.` The guide G is radially slotted from top to bottom as indicated at 8 and the location of this slot is such that its outer end lies opposite the innermost turn of the helix so that Vthe thread as it works its Way into the center of the helix is directed automatically into this Vslot and' laid around the rod 7 in one'or more turns or twists whereby the ythread is tensionedand incidentally prevented from jumping out of the helix in the operation lof the Winder.

The degree of tension imparted tol theV thread is regulated by the tightness of the turns ofthe thread around the rod 7. This may be regulated and hencethe tension controlled by. means of a tension regulating device cooperating with the rod. Such regulating device may be variously constructed but as here, shown takes the form of. a slide 9 which is pierced as shown to receivethe rod 7. The slide 9is mounted in a slot 10 extending vertically of the offset portion 3 of the Winder vframe above the helix L and the adjustmentof the slide in said slot is held by any suitable device as the wind vnut 11.

When the lslide-is adjusted towards the helix y the thread will` be laid in closer turns yon the rod 7 and hencewill Beyond the upper end of the rod 7 the Winder frame is provided With the usual guide roll l2 over Which the thread passes after it leaves the rod 7 From the roll l2, the thread passes to a second guide roll 13 mounted on the frame substantially opposite the helix 4 and thence onto any suitable spool (not shown). 1

It Will thus be noted that I provide not only for maintaining a uniform tension on the thread at all times and under all conditions ofv operation, but also for positively regulating the degree of tension according to the particular kind of thread being Wound, or other consideration, all in a construction Which is at once both simple and inexpensive of construction and capable of installation upon existing Winder frames WithoutV modification of structure.

Various modifications in the construction and operation of my device may obviously be resorted to Without departing from the spirit and scope of my invention if Within the limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

l. A thread tensioning device for use With a Winder frame having .a bobbin com prising a helix mounted on said frame and through Which the thread from the bobbin is adapted to be draWn, a tension liar fixed Within the helix centrally thereof and a guide having a radial slot extending therethrough from top to bottom and disposed substan tially opposite the innermost turn of the helix through Which'slot the thread is guided from said helix onto the bar in a plurality of turns, and means for regulating the tightness of said turns and hence the degree of tension of the thread.

2. A thread tensioning device for use With a Winder frame having a bobbin comprising a helix mounted on said frame and throughv Which the thread from the bobbin is adapted to be draWn, a tension bar iixed Within the helix centrally thereof and a guide having a radial slot extending therethrough from top to bottom and disposed substantially opposite the innermost turn of the helix through Which slot the thread is guided .from said helix onto the bar in a plurality of turnsry and means for regulating the tightness of said turns and hence the degree of tension of the thread, said means comprising a slide adjustably mounted on the Winder frame beyond the helixand guided on said tension bar, and means for holding the adjustment of. said slide.

3. A thread tensioning device for use With a Winder frame having a bobbin comprising a helix mounted on said frame and disposed in substantially the longitudinal axis of said bobbin and through Which the thread from the bobbin'is-ada-pted to be drawn, a tension bar fixed Within the helix centrally thereof and a guide having a radial slot extending therethrough from top to bottom and disposed substantially opposite the innermost turn of the helix through Which slot the thread from the helix is guided onto the bar in a plurality of turns, said frame beyond the helix being longitudinally slotted, a slide adjustable in said. slot and guided on. said ten' sion bar for regulating the tightness of the thread turns on the bar and hence the degree of tension of theithread, and means for holding the adjustment of said slide.

In testimony Whereof I afiix my signature.

JEAN B. DAUDELIN.

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